摘要
以古石拱桥泰山桥为例,通过实地调研并对石拱桥空间受力性能进行数值分析,得出拱券的最大竖向位移发生在跨中中部;最先出现破坏开裂部位是拱券上部的辅助构件以及拱角处。建议在古石拱桥的维修保护中,首要对辅助构件及拱角基础进行加固;可采用轻质、低压缩性、水稳性好的填料来替代原有拱背填料,同时注重对石拱桥的变形监测。
Taking Taishan Bridge, an ancient stone arch bridge, as an example, through field survey and numerical analysis on spatial bearing performance of stone arch bridge, it is found that the maximum vertical displacement of arch ring happens at the middle part of midspan and that first destructive cracks are generated on auxiliary components at upper part of arch ring and arch angle. It is suggested that during maintenance and protection of ancient stone arch bridge, auxiliary components at upper part of arch ring and arch angle base is reinforced at first; low-compressibility lightweight filling with good water stability may be used to replace the original back arch filling, meanwhile, monitoring is carried out on deformation of stone arch bridge.
出处
《建筑技术》
2012年第11期1045-1048,共4页
Architecture Technology
关键词
古石拱桥
加固
保护
空间受力
有限元
ancient stone arch bridge
reinforcement
protection
spatial force bearing
finite element
